A gestational diet high in fat-soluble vitamins alters expression of genes in brain pathways and reduces sucrose preference, but not food intake, in Wistar male rat offspring.

Publisher: Canadian Science Publishing Country of Publication: Canada NLM ID: 101264333 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1715-5320 (Electronic) Linking ISSN: 17155312 NLM ISO Abbreviation: Appl Physiol Nutr Metab Subsets: MEDLINE

Publication: 2011- : Ottawa, ON : Canadian Science Publishing
Original Publication: Ottawa, ON : National Research Council of Canada, c2006-

Diet* ; Maternal Nutritional Physiological Phenomena*; Food Preferences/*drug effects ; Gene Expression/*drug effects ; Sucrose/*administration & dosage ; Vitamins/*administration & dosage; Animals ; Animals, Newborn ; Body Weight/drug effects ; DNA Methylation ; Female ; Hippocampus/drug effects ; Hippocampus/metabolism ; Hypothalamus/drug effects ; Hypothalamus/metabolism ; Male ; Neuropeptide Y/genetics ; Neuropeptide Y/metabolism ; Pregnancy ; Pro-Opiomelanocortin/genetics ; Pro-Opiomelanocortin/metabolism ; Rats ; Rats, Wistar ; Receptors, Dopamine D1/genetics ; Receptors, Dopamine D1/metabolism ; Sucrose/analysis ; Up-Regulation ; Vitamin A/administration & dosage ; Vitamin D/administration & dosage ; Vitamin E/administration & dosage ; Vitamin K/administration & dosage ; Weaning

High intakes of multivitamins (HV) during pregnancy by Wistar rats increase food intake, body weight, and characteristics of the metabolic syndrome in male offspring. In this study, high-fat soluble vitamins were fed in combination during gestation to test the hypothesis that they partially account for the effects of the HV diet. Pregnant Wistar rats (14-16/group) were fed a recommended multivitamin diet (1-fold all vitamins) or high-fat soluble vitamin diet (HFS; 10-fold vitamins A, D, E, and K) during pregnancy. Offspring body weight, food intake, and preference as well as expression of selected genes in the hypothalamus and hippocampus were evaluated at birth, weaning, and 14 weeks postweaning. Body weight and food intake were not affected but sucrose preference decreased by 4% in those born to dams fed the HFS gestational diet. Gene expressions of the hypothalamic anorexogenic pro-opiomelanocortin (Pomc) and orexogenic neuropeptide Y (Npy) (∼30% p = 0.008, ∼40% p = 0.007) were increased in weaning and adult rats, respectively. Hippocampal dopaminergic genes (35%-50% p < 0.05) were upregulated at birth and 14 weeks postweaning. DNA hypermethylation (2% p = 0.006) was observed in the dopamine receptor 1 (Drd1) promoter region. We conclude that a gestational diet high in vitamins A, D, E, and K does not show the effects of the HV diet on body weight or food intake but may affect the development of higher hedonic regulatory pathways associated with food preference.

MOP-93624 Canada Canadian Institutes of Health Research

Keywords: development; dopamine; développement; epigenetics; hippocampe; hippocampus; hypothalamus; neuropeptide; reward; récompense; épigénétique

0 (Neuropeptide Y)
0 (Receptors, Dopamine D1)
0 (Vitamins)
11103-57-4 (Vitamin A)
12001-79-5 (Vitamin K)
1406-16-2 (Vitamin D)
1406-18-4 (Vitamin E)
57-50-1 (Sucrose)
66796-54-1 (Pro-Opiomelanocortin)

Date Created: 20150320 Date Completed: 20160720 Latest Revision: 20150330

20231215

10.1139/apnm-2014-0480

25787712